A modified sliding‐mode controller‐based mode predictive control strategy for three‐phase rectifier. (7th August 2020)

• Record Type: Journal Article
• Authors: Wang, Meng; Wang, Haoran; Shi, Yanyan; Shen, Minghui; Song, Jian
• Is Part Of: International journal of circuit theory and applications. Volume 48:Number 10(2020)
• Page Start: 1564
• Page End: 1582
• Publication Date: 2020-08-07
• Subjects: dynamic response -- predictive control -- rectifier -- sliding‐mode control; Electric circuit analysis -- Periodicals; 621.319205
• DOI: 10.1002/cta.2858
• Languages: English
• ISSNs: 0098-9886

Abstract

Summary: In three‐phase pulse width modulation rectifiers, proportional integral (PI) has been used in voltage outer‐loop to obtain the active current reference when using the conventional model predictive control strategy. However, the performance of the dynamic response is poor as large step and longer settling time are required on the active power under the load variation. To cope with this problem, a sliding‐mode controller can be employed to replace the PI controller. Nevertheless, the sliding‐mode variable structure control is discontinuous which leads to the chattering problem. In this work, a novel control strategy which combines a simplified model predictive control and a modified sliding‐mode control is proposed and investigated. The proposed strategy is supposed to reduce the effect of unexpected disturbances such as the DC‐link voltage step and the load variation. Simulation and experiments have been conducted for validation. The results indicate that the proposed strategy is feasible and has excellent dynamic response. Furthermore, it is easy to design and implement. Abstract : In this work, a modified sliding‐mode controller‐based mode predictive control strategy is proposed and investigated. Since the control law and the controller are designed based on the system model, the proposed strategy is able to reduce the effect of unexpected disturbances such as the DC‐link voltage step and the load variations. Simulation and experiments have been conducted for validation.